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Boost tapering on 3rd gear pull

Boost Control

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So im still working on hitting my boost targets. The td04 on my forester xt is tapering weird. Im not sure if its the turbo or what exactly. I have p and i values all set to 0 for now. Ill attach a log my boost pressure is weird to me. Any help or explanation on why its doing this. I tried reading subaru forums.

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